290 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



It will probably be impossible ever to determine definitely Kirby's 

 Locusta leucostoma, as the description is altogether inadequate and the 

 British Museum does not contain the type; at least I could not find it 

 by special search for it in 1865, and it is not mentioned in Walker's 

 catalogues ; Walker, following my earlier but probably wrong determi- 

 nation, placed it as a synonym of M. bivUtatus, but none of his speci- 

 mens included Kirby's. 



Mr. Samuel Henshaw, during a recent visit to the British Museum, 

 examined the types of Walker's Caloptenus extremus and found them to 

 agree with specimens of the present species coming from Keunicott's 

 collection on the upper Mackenzie, which he took with him; they 

 differed "only in having slightly shorter wings," in which respect 

 Walker's specimens agree with others of Kennicott's collection belonging 

 to this species. 



85. MELANOPLUS MONTICOLA, new species. 

 (Plate XIX, fig. 5.) 



Platyphyma montana SCUDDER!, Appal., I (1878), p. 263. 

 Melanoplus monticola BRUNER!, MS. (pars). 



Rather below the medium size, blackish fuscous. Head feebly promi- 

 nent, dark testaceous, greatly infuscated especially in the female, above 

 wholly or almost wholly blackish fuscous, the piceous postocular baud 

 hardly distinguishable in darkest examples; vertex gently tumid, a 

 little elevated above the pronotum, the interspace between the eyes 

 half as broad again (male) or more than twice as broad (female) as the 

 first antennal joint; frontal costa rather prominent, percurrent, equal, 

 as broad as the interspace between the eyes, impressed at the ocellus 

 and sometimes sulcate below, punctate throughout, above biseriately; 

 eyes not prominent, of moderate size, as long as (female) or much 

 longer than (male) the infraocular portion of the genae; antennae cas- 

 taneous, apically infuscated, nearly four-fifths (male) or nearly three- 

 fifths (female) as long as the hind femora. Pronotum enlarging slightly 

 and pretty regularly from in front backward, wholly blackish fuscous, 

 more or less ferruginous in the male, occasionally the position of the 

 lateral carinae faintly marked on the prozona with dull navous, some- 

 times the lateral lobes a little lighter inferiorly and then showing a 

 piceous postocular band on the prozona, the disk gently convex and 

 passing by an abruptly rounded shoulder sometimes forming feeble 

 lateral carinae into the anteriorly tumid but otherwise vertical lateral 

 lobes; median carina percurrent, feebler and sometimes subobsolete on 

 the prozona; front margin truncate, hind margin strongly obtus- 

 angulate; prozona longitudinal (male) or quadrate or feebly transverse 

 (female), generally slightly longer than the closely and shallowly punc- 

 tate metazona. Prosternal spine short (female) or rather short (male), 

 appressed cylindrical, very blunt, erect; interspace between mesosternal 

 lobes quadrate (male) or feebly transverse (female), the inetasternal 



